A boy who was playing with the girl told first responders that the girl was walking the dog on a leash when the dog "lunged and took off," then pulled her into a curb, Armacost said. The girl was conscious but had serious injuries and was flown to a Johns Hopkins hospital.

The dog was not at the scene when crews arrived and Armacost said she did not know what type of dog it was.

"This is not a dog attack, so there was no police involvement; there was no animal-control involvement," Armacost said.

Prosecutors announced new indictments Monday of Baltimore jail staff, the same day a top corrections official testified in the federal corruption trial of eight inmates and corrections officers about the difficulty containing misconduct in the system.